"They're so rare, and they're incredibly useful scientifically," said Conor O'Riordan of the Max Planck Institute for Astrophysics.

MUNICH — When the European Space Agency’s Euclid space telescope launched on July 1, 2023, to explore the dark universe, no one expected its first major discovery to come during routine testing. Yet ...

An Einstein Ring was discovered by the European Space Agency's Euclid space telescope in September 2023. Space telescope finds rare 'Einstein Ring' of light in nearby galaxy A rare ring of light ...

Around a galaxy just 590 million light-years away, astronomers have discovered a stunning example of one of the rarest phenomena in our skies: a perfect ring of light. The phenomenon is known as an ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers with ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. An Einstein ring! What at first appears to be a single, ...

A rare ring of light surrounding a galaxy nearly 590 million light-years away from Earth has been discovered by a space telescope that scientists hope will uncover more cosmic phenomena throughout the ...